Transmission mechanism.



J. M. MACK. TRANSMISSION MECHANISM.

' APPLICATION FILED APB..28, 1906. 954,53 1 Patented Apr. 12, 1910.

6 SHEETS-SHEET I.

ATTORNEYS J. M. MACK.

TRANSMISSION MECHANISM.

APPLICATION FILED APR. 28,1906

954,531. Pat nted Apr. 12, 1910.

B'SHEBTS-SHEET 2.

7 45 Law b 3 113 109 ar WITNESSES: INVENTOR ATTORNEYS J. M. MACK.

TRANSMISSION MECHANISM.

APPLICATION FILED APR.28, 1906.

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. APPLICATION FILED APILZS; 1906 Patented Apr.

6 SHEETS-SHEET 4.

WITNESSES: 5 INV ENTOR fifimilhlfack %/Mm% Q.

M M/M/VM ATTORNEYS J. M. MACK.

TRANSMISSION MECHANISM.

APPLICATION FILED APB.28.1906.

954,53 1 Patented Apr. 12, 1910.

6 SHEETS-SHEET 6.

WITNESSES: lNVENTOR Jim/ JZJfavZ:

W 4% ATTORNEYS.

JOHN M. MAGKfOF ALLENTOWN, PENNSYLVANIA.

rmnsmssron MECHANISM.

Specification of Letters Patent. Patented A 12, 1910;

Application filed. April 28, 1906. Serial NO 314,226.

To all whom it may concern:

Be it known that I, JOHN M. MACK, a citizen of the United States, residing at Allentown, Lehigh county, in the State of Pennsylvania, have invented certain new and useful. Improvements in Transmission Mechanism, of which the following is a full, clear, and exact specification.

My invention relates to improvements in means for permitting a motor vehicle to travel at different rates of speed or in different directions, and the same has for its object more particularly to provide a simple, efiicient and reliable apparatus in which, by means of a single operating lever so arranged as to be easily within reach and under control of the operator, the directionof the vehicle may be instantly changed from a forward to a reverse, or the speed of the vehicle changed from low speed to in termediate, or from intermediate to the high speed, and vice versa.

To the attainment of the aforesaid objects and ends, my invention consists in the novel details of construction, and in the combination, connection and arrangementof parts hereinafter more fully described, and then pointed out in the claims.

In the accompanying drawings forming part of this specification, whereinlike numerals of reference indicate like parts, Fig

ures 1 and 2 jointly show in plan view a transmission mechanism constructed accord ing to and embodying my said invention, the gear case being shown with its cover removed, and the operating levers partly in section on the linc 22 of Fig. 5; Fig. 3 is a view of, the gear case with its cover removed, and showing the operating parts therein in section; Fig. 4 is an end view of the casing partly broken away to show a portion of the interior mechanism; Fig. 5 is a section on the line 5-5 of Fig. 6, showing a portion of the gear case, and the operating lever in connection therewith; Fig. 6 is a front end view of the gear casing, and the operating lever and intermediate mechanism shown in section, and Fig. 7 is a detail side view of operating lever, showing the locking device therefor.

In said drawings 15 designates a casing preferably made of metal, and consisting of a receptacle portion 16 adapted for securement to a. vehicle frame, and a cover 17 adapted to be secured to said receptacle portion 16 by screws or bolts 18, 18 passing through the flanged edges of said receptacle portion and cover.

19-denotes a bearing or pillow-block arranged transversely. Within the receptacle portion 16 near its center and adapted to receive the ball bearings 20, 21, and in the front end of the receptacle portion 16 are supported ball bearings 23, 2-4, in line with the bearings 20, 21, respectively. lVithin the bearing 21 is revolubly mounted a gear wheel 25 having a hollow shaft 27 formed integral therewith; the said gear Wheel has its face recessed and provided with an internal member 26*. The end of said shaft 27 is tapered at. 28 and carries a bevel gear 29, and its extreme end 30 reduced in diameter and supported in a roller bearing 31 arranged in the, receptacle 16.

32 denotes a nut disposed upon the threaded portion of the shaft 27 provided intermediate its reduced end 30 and tapered portion 28 which serves to hold the bevel gear 29 duly in position upon the shaft 27.

denotes the main or driving shaft have ing its inner portion stepped, and its extreme inner end supported in a roller bearing 34 arranged within the hollow shaft 27, and its adjoining portion disposed within a ball bearing provided in the gear 25. The forward portion of the driving shaft 33 is supported in the roller bearing 2% in the front end of the casing, and its projecting end flexibly connected to the end of the engine shaft 36. The portion of the shaft 33 dispose-dwithin the casing 16 is partly composed of polygonal sections 37, 38 arranged intermediate the round portions of said shaft. Upon the section 37 is slid'ably disposed a clutch 39 having a portion 40 adapted to engage the internal clutch member 26" of the high speed gear 25, and a portion 41 adapted to engage the integral clutch menibcr 42 of the second speed gear 43 which is disposed upon the rounded portion of the shaft 33 intermediate the polygonal sections 37. 38. Adjoining said gear 43 is disposed a gear 44 having an internal clutch member 45 which is also free upon the shaft and 46 denotes a double clutch which is slidably arranged upon the section 38 of I clutch member 45, and a clutch section 18 adapted to engage the internal clutch member -19 of a gear 50 freely mounted upon the forward end of the shaft 33.

Upon the bottom of the casing at one of its sides are provided bearings 51, 51 within which is slidably supported a tubular rod 52 having fixed thereon intermediate the bearings 51, 51a forked member 53 the ends of which embrace the clutch 16 intermediate the sections 47, 18 thereof, and to the side of said bearings 51, 51 is a bearing 51-.

55 denotes a rod which extends through the tubular rod 52, and has its inner end supported in the bearing 54. Upon said rod 55 adjacent to its inner end is fixed a forked member 56, which embraces the clutch 39 intermediate the gears 10, 41 thereof, and below said forked member 50 and integral therewith is an inwardly projecting arm 57 having :1 depending pin 58 at its inner end.

00 denotes a gear wheel meshing directly with the gear on the driving shaft and provided with a hollow shaft or sleeve 01 which is mounted in the roller bearing 20. At the end of said hollow shaft or sleeve 01 is disposed a roller bearing 62, and the gear further provided with an internal clutch member 63.

\Vithin the casing and parallel with the main driving shaft is arranged a jackshaft 61 having fixed thereon, in the following order reading from rightto left, a gear (reverse) 65 communicating with the gear on the driving shaft 33 through the intermediate gear (36 fixed upon a shaft 07 supported in bearings (38, 69 provided within the casing below the driving shaft 33; a slow speed gear 70 meshing directly with the gear 14 on the driving shaft, and a gear 71 meshing directly with the gear 43 on the driving shaft 33.

The jack-shaft (3% is provided with a polygonal section 61 intermediate the gears 00 and 71 upon which section is slidably arranged a clutch T2 having a clutch section 73 held normally in engagement with the internal clutch member (33 of the gear 00 by means of a spring 7 1 disposed about the jack-shaft Get and bearing against the gear 71 and said clutch 72.

75 denotes a lever which is pivotally mounted near its middle upon a bearing 76 arranged in the base of the casing between the driving shaft 33 and the jack-shaft (31. At the inner end of said lever is pivotally supported a forked member 77 which embraces the elutch 72 between the clutch section 73 and spring 74, and the forward end of said lever 75 is forked (as shown at Figs. 1 and 3) and adapted for engagement with the depending pin 58 on the arm 57 carried by the shifting rod In the sides of the casing near its lefthand end are provided ball bearings 78, ?9,

and within the casing about midway of the ball bearings 78, T9, is supported a third ball bearing 80.

81 denotes the counter-shaft which is com posed of two sections 82, 88 having their inner ends squared and abutting against each other. Upon the inner abutting ends of said sections 82 83 are loosely fitted bevel gears 84, S5 meshing respectively with smaller bevel gears 8(3, 87 which are loosely fitted upon short shafts 88 89 suitably mounted in the casing )0 at right angles to the countershaft, the whole constituting an ordinary compensating gear. Vhen no counter-shaftis employed, the rear axle of the vehicle may be constructed as above described.

95 denotes a shaft which is supported transversely upon the vehicle frame 102 in front of the forward end of the casing 16, and provided at its outer end with a head 95 Upon said shaft is disposed a sleeve 96 having fixed thereon an arm 97 which is pivotally secured atits lower end to a link 98 which is pivotally connected at its other end of the projecting end of the shifting rod 55 arranged in the casing 16. 99 denotes a second sleeve which is disposed upon the sleeve 96, and has fixed thereon an arm 100 arranged beside the arm 97. The lower end of said arm 100 is pivotally secured to a link 101 which is suitably connected at its rear end to the projecting portion of the. tubular shifting rod Upon the side member of the frame 102 directly above the shaft 95 is bolted a segmental plate 103 having an aperture at its lower end forming a'bearing for the sleeve 99, and the parts therein. At the upper edge of said plate 103 are provided guides 104, 105, 106 which are secured to said plate 108 and maintained duly separated by sleeve sections 10? arranged intermediate said guides 101, 105, 106 upon the bolts 108, 108 and adjacent to the bolts 108, 108 are provided transverse bolts forming stops 109 109 109, 109". Upon the outer end of the sleeve 99 is fixed the lower end of a. supplemental lever 110 arranged in line with the arm 100 on said sleeve. The upper end of said supplemental lever 110 is provided along its vertical edges with inwardly projecting portions 111, 111, and intermediate the same with a longitudinal slot 112. Upon the outer end of the sleeve 90 is fixed the 'lower end of a second supplemental lever 113 corresponding to the lever 110, and in line with the arm 97 on sa d sleeve 96. The upper end of said supplemental lever 118 is also provided with inwardly projecting portions 114, 111 and intermediate the same with a longitudinal slot 115. Upon the outer surfaces of said supplemental levers 110, 113 are arranged bearings 116, 116 within which are disposed the stems 117 of bolts 118 118 provided upon their inner opposing surfaces with studs 119 119, adapted to extend into the longitudinal slots 112, 115 in the levers 1.10, 113 respectively.

120, 120 denote springs disposed about the stems 116 intermediate the bearings 116, 1.16 and the bolts 118, 118 whereby to hold the latter normally projected and the endsthereof within the recesses 121, 121 in the undersides of the guide plates 101, 106. The belt. 118 of the supplemental lever 110 being held in position by the plate 103 and the bolt 118 of the su ')plemental lever'113 by a guide 122 secured upon the outer surface of said lever 113.

123 denotes a collar loosely disposed upon the sleeve 96 between the fixed ends of the supplemental levers 110, 113, provided with a depending portion 124, and 125 denotes an operating lever having its lower end bifur' cated, and embracing the collar 123, and the ends of said bifurcated portion pivotally secured to the depending portion 124 of the collar 123, whereby to permit of said lever being rotated upon the sleeve 96, and also oscillated thereon in a direction parallel with said sleeve 96 and shaft 95 therein. The operating lever 125 is provided upon its opposite sides above the guide plates 10-t- 105, 106 with bearings or guides 126, 126 within which work rods 127, 127 having bolts 128 128 secured to their lower ends working in guides 129, 129 and springs 130, 130 disposed upon said rods intermediate said bolts 128 128 and bearings 126, 126.

lVhen the operating lever 125 is shifted into engagement with one of the supplemental levers 110, 113 one of the bolts 128 on the side of the operating lever will engage either of the recesses 132 or 13?, provided in the upper edge of the middle guide plate 105, and thereby hold the operating lever 125 and either of the supplemental levers 110, 113 which happens to be in engagement therewith jointly locked to their adjusted position.

Upon the upper end of the operating lever 125 is pivotally secured the bifurcated end of a lever 134 to the portions of which at each side of the operating lever 125 are pivotally secured the upper ends of the rods 127, 127 of the bolts 128, 128.

Upon the portion of the operating lever 125 opposite to the recesses 112, 115 in the supplemental levers 110 113 are provided outwardly projecting studs 135, 135 having their ends beveled downward and inward to form cams adapted to engage the studs 119, 119 of the bolts 118. 118. when the operating lever 125 is oscillated in either direction.

The operation of the apparatus is as follows: When the operating lever 125 is in the neutral position as indicated at Figs. 2, 6 .and 7, the parts within the casing will be in the positions indicated at Fig. 1---t1ha't is to say. all the clutches will be out of engagel-nen-t with their respective ears except, the clutch T2, the portion 73 of which will be in engagement with the internal clutch member 63 of the gear 60. In this position and arrangement the driving shaft 33, and the jack-shaft 64 are free to rotate without communicating motion to the counter-shaft S1. \Yhen the operating lever 125 is thrown outward in the direction of the arrow A (Fig. 6) it will engage the supplemental lever 113 intermediate the portions 114, 111 thereof. and at the same time the cam stud 1.35 will engage the stud 11!) of the bolt 118 on the supplemental lever 113 and depress said bolt and release its upper end of its engagement with the recess 121 in the lever edge of the guide plate 104. As soon as the bolt 118 of the supplemental lever 113 has been released the operating lever 125 and said supplemental lever 113 may be jointly moved forward or backward between the guide plates 10% and 105 and be jointly locked to the shifted positions by the engagement of the bolt 128 on the inner side of the lever 125 with either of the recesses 82, 133 in the upper edge of the middle guide plate 105. By shifting the operating lever 125 and the supplemental lever 113 forward against the portion of the stop 109, the shifting rod will be forced inward by the arm 97'and link 98, and cause the arm 57 on said rod 55 to shift the lever 75, release the portion 73 of the clutch T2 of its engagement with the internal clutch member 63, and at the same time through the medium of the forked member 56 car ried by the rod shift the clutch 39, and cause the clutch part 10thereof to engage the internal clutch member 26 of the high speed gear 25, and cause the shaft 28, bevel gear 25) to rotate directly through the driving shaft 33, and communicate motion to the counter-shaft 81 through the large bevel gear 82- on said counter-shaft. By shifting the operating lever 125 and supplemental lever 113 backward and against the stop 109 the shifting rod 55 will .be drawn out ward by the arm 97 and link 98 and cause the gear 41 of the clutch 39 to engage the internal clutch member 42 of the second speed gear 43 and lock the same upon the drivin shaft 33 and at the same time shift the lever and permit the clutch 72 to en gage the internal clutch member of the gear 60. In this position motion will be transmitted from the driving shaft 33 through the gear -13. gear 71 on the jack-shaft 64. gears 60, 25 and bevel gear 2f) to the bevel gear 82 on the counter-shaft. In order to bring the slow speed gear 16 and the reverse gear 65 into operation the operating lever 125 and supplemental lever 113 must first be unlocked by means of the lever 13 1 and rod 127, and said levers then returned to the neutral position, when the operating lever 125 may be disengaged from the supplemental lever 113, and the latter locked -to said position by means of its bolt 118 engaging the recess 121 in the guide plate 104. By throwing the operating lever 125 inward (in the direction of the arrow B Fig. 6) the same will engage the supplementallever 110 and release the bolt 118 thereof through the contact of the cam stud 135 with the stud 119 of the belt 118 carried by said supplemental lever 110, and thus permit the operating lever 125, and supplemental lever 110 to be jointly actuated. By shifting said lever 125 and supplemental lever 110 forward against the stop 109 the sleeve 99 and arm 100 will be partially rotated and the tubular rod 52 moved inward through the link 101 without disturbing the shifting rod 55; cause the forked member 53 carried by said tubular rod 52 to move the part 47 of the clutch 46 into engagement with the internal clutch member 45 and lock the gear 44 connected thereto upon the driving shaft 33. Hereupon motion will be transmitted from the driving shaft 33 to the counter-shaft 81 through the gear 44 slow speed gear 70 on the jack shaft 64, gears 60, 25 and bevel ears 29 and 82. After releasing the locking bolt 128 of its engagement with the recess 133 by means of the lever 134 and the rod 127 the operating lever 125 may be shifted again, and when adjusted to contact with the stop 109, the tubular shifting rod 52 will be drawn outward by the link 101 and arm 100 and the gear 48 of the clutch 46 thrown into engagement with the internal clutch member 49 and thereby lock the gear 50 connected thereto to the driving shaft Hereupon a reverse movement will be trans mitted to the counter shaft 81 through the gear 50, reverse gear on the jack-shaft 64, gears 60 and 25, and bevel gears 29 and 82. The supplemental lever 110 and the operating lever 125 are jointly locked to their forward ositions by the engagement of the left-han bolt 128 (as seen at Fig. 6) with the recess 133 in the middle guide plate 105, and to the rearward position by the engagement of the same bolt with the recess 132 in the said guide plate 105.

I do not claim herein the construction of the levers and'their cooperating parts for actuating the transmission mechanism, as the same forms the subject matter of a divi' sional application, filed March 7th, 1010, Se rial No. 547,733.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a transmission mechanism, the combination with a driving shaft, of a jackshaft, a series of gears fixed thereon, gears arranged at the end of said driving shaft, and said j ack-shaft meshing with each other, a bevel gear adapted to rotate with the gear of the driving shaft, a counter-shaft, a bevel gear thereon in mesh with the bevel gear aforesaid, a clutch on said jack-shaft normally engaging the gear arranged at the end thereof, a series of gears loosely mounted upon said driving shaft in mesh with the gears fixed upon the jack-shaft, clutches arranged upon said driving shaft, and means for releasing the clutch of the jack-shaft as one of the clutches on the driving shaft is shifted into operative position, and engaging the clutch of the jack shaft as the remaining clutches of the driving shaft are severally shifted into operative position, substantially as specified.

2. In a transmission mechanism, the combination with a driving shaft, of a jackshaft, a series of gears fixed thereon, gears arranged atthe ends of said driving shaft and jack-shaft in mesh with each other, a bevel gear adapted to rotate with the gear of the driving shaft, a counter-shaft, a bevel gear thereon in mesh with the bevel gear aforesaid, a clutch on said jack-shaft normally engaging the gear arranged at the end thereof, a series of gears loosely mounted upon said driving shaft in mesh with the gears fixed upon the jack-shaft, clutches arranged upon said driving shaft, means for releasing the clutch of the gear at the end of the jack-shaft, and actuating one of the clutches of the driving shaft to engage the 100 gear at the end of said driving shaft, and means for actuating the clutch of the j ackshaft to engage its gear and the remainder of the clutches on said driving shaft to severally engage their respective gears, substan- 105 tially as specified.

3. In a transmission mechanism, the combination with a driving shaft composed of two parts, a gear and a bevel gear fixed on one of said parts, and a series of gears and clutches on the other of said parts adapted for engagement with said gears, a jack-shaft, a gear at its end meshing with the gear on the part of thedriving shaft first mentioned, a clutch on said jack-shaft adapted normally to engage the gear at the end thereof, and a series of gears meshing with those on the part of the driving shaft last mentioned, a counter-shaft, a bevel gear thereon in mesh with the bevel gear of the driving shaft, means for releasing the clutch of the jack-shaft from the gear at the end thereof and actuating one of the clutchcson the driving shaft to engage the gear upon the part thereof first mentioned, and means for actuating the clutch of the jack-shaft to engage its gear and the remainder of the clutches on the driving shaft to severally engage their respective gears, substantially as specified. 13o

4. In a transmission mechanism, the combination with a driving shaft composed of two parts fitted to each other, a gear and a bevel gear fixed on one of said parts, a series of gears loosely mounted upon the other of said parts provided with internal clutch members, and two sets of clutches adapted to engage said internal clutch members, a jackshaft composed of two parts fitted to each other, a gear wheel provided with an internal clutch member on one of said pa rts mcsh ing with the gear wheel on the corrcspmiding part of the driving shaft, a clutch on said jack-shaft adapted normally to engage the internal clutch member'at one end thereof, a series of gears fixed on the other partof said jack-shaft meshing with the loose gears on the driving shaft, a counter-shaft, a bevel gear thereon in mesh with the bevel gear of the driving shaft, means for releasing the clutch of the jack-shaft from the gear at the end thereof, and actuating one set of clutches of the driving shaft to engage either of its gears, and means for actuating the other set of clutches to engage either of its gears, substantially as specified,

In a transmission mechanism, the combination with a driving shaft composed of a solid part, and a hollow part fitted upon one end thereof, a gear fixed at one end of said hollow part; a bevel gear fixed at the other end of said hollow part. and a series of gears loosely mounted on said solid part and provided with clutch members, a plurality of clutches disposed upon said solid part and adapted to engage the clutch members thereon, a jacl sl1aft composed of a solid part and a hollow part fitted upon one end thereof, a gear wheel provided with a clutch member fixed upon said hollow part, and meshing with the gear upon the hollow part of the driving shaft, a clutch on said jack-shaftnormally in engagement with the clutch member on the hollow part thereof, a series of gears upon the solid part of said jack-shaft meshing with t-heloose gears upon the solid part of the driving shaft, a coun ter-shaft, bevel gear fixed thereon meshing with the one on the hollow part of the driving shaft, means for releasing the clutch on the jack-shaft from the clutch member upon the hollow portion of said jack-shaft, and actuating one of said clutches to engage either of its clutch members, and means for actuating the other of said clutches to engage either of its clutch members, substantially as specified.

6. In a transmission mechanism, the combination with a driving shaft con'iposed of a solid part, and a hollow part fitted upon one end thereof, a gear fixed at one end of said hollow part, a bevel gear, fixed at the other end of said hollow part, a series of gears loosely mounted upon said solid part and provided with internal clutch members, a plurality of clutches slidably disposed upon said part intermediate said gears each COI'IIPIiSlIIg two clutch sections adapted to engage said internal clutch members, a jackshaft arranged parallel with said driving shaft composed of a solid part and a hollow part fitted upon one end thereof, a gear having an internal clutch member and meshing with the gear upon the hollow part of the driving shaft, a clutch slid-ably disposed upon the solid portion of saidjack-shaft, a spring for holding said clutch normally in engagement with said internal clutch member on said hollow part, a lever having one end in engagement with said clutch, a series of gears fixed on the solid part of said jack-shaft meshing with the loose gears on the solid part of the driving shaft, a counter-shaft, a bevel gear thereon in mesh with the bevel gear on the hollow part of the driving shaft, and means for actuating said clutches comprising a pair of slidable rods; one of said rods being operatively connected to one of the clutches on the driving shaft, and the lever actuating the clutch on the jack-shaft, and the other of said rods operatively connected with the other of said clutches on said driving shaft, substantially as specified.

Signed at city of New York in the county of New York in the State of New York, this twenty-sixth day of April, nineteen hundred and SIX.

JOHN M. MACK. \Vitnesses:

CONRAD A. DIETERICH, JAMES J. Dononun. 

